class Event{
  var name:String = "";
  var attributes:[String:Any] = [:];
  var lineItems:[LineItem] = [];
}

class LineItem {
  var itemName:String = "";
  var details:[String:Any] = [:];
}

var test = Event()
    test.name = "jogi"
    var dictionary = Dictionary<String,Any>();
    dictionary.updateValue("shoes", forKey: "item")
    dictionary.updateValue(345, forKey: "amount")
    test.attributes = dictionary


    let json = JSON(test)